It should go without saying, but I'm going to say it anyways, since it hasn't come up in this thread yet. You can never, never, NEVER leave a baby alone with these kinds of solids. Not to go to the bathroom, not to throw in a load of laundry... NOTHING! Choking, the real, deadly kind, not the gagging and learning kind, is silent and happens in a few seconds. Even a cooked carrot can break off a chunk and occlude a tiny airway.
Baby led solids are a grand idea, but you HAVE to understand the risk and stay present for the process. A worthwhile investment of time, for sure.